111220111111 has 8 divisors (see below), whose sum is σ = 113284483200. Its totient is φ = 109161715320.

The previous prime is 111220111103. The next prime is 111220111141. The reversal of 111220111111 is 111111022111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111220111111 - 2³ = 111220111103 is a prime.

It is a super-3 number, since 3×111220111111³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111220111091 and 111220111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220111141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1456501 + ... + 1530958.

It is an arithmetic number, because the mean of its divisors is an integer number (14160560400).

Almost surely, 2^111220111111 is an apocalyptic number.

111220111111 is a deficient number, since it is larger than the sum of its proper divisors (2064372089).

111220111111 is an equidigital number, since it uses as much as digits as its factorization.

111220111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988149.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111220111111 its reverse (111111022111), we get a palindrome (222331133222).

The spelling of 111220111111 in words is "one hundred eleven billion, two hundred twenty million, one hundred eleven thousand, one hundred eleven".